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CVE-2026-59278— In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types in header mapper default trusted packages

Quick assessment

Affected
Spring Spring for Apache Kafka
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

JsonKafkaHeaderMapper 和 DefaultKafkaHeaderMapper 的默认受信任包列表中包含了 。当使用这些映射器时（这也是所有 消费者的默认配置），外部的 Kafka 生产者可以通过 消息头注入 类型。 受影响的版本： Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for Apache Kafka 3.0.0 - 3.3.16 Spring for Apache Kafka 2.9

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-59278

Vulnerability Information
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Vulnerability Title
In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types in header mapper default trusted packages
Source: CVE Program / CVE List V5
Vulnerability Description
JsonKafkaHeaderMapper and DefaultKafkaHeaderMapper include java.net in their default trusted packages list. When these mappers are used — which is the default configuration for all @KafkaListener consumers — an external Kafka producer can inject a java.net.InetAddress type via the spring_json_header_types message header. Spring for Apache Kafka 4.1.0 Spring for Apache Kafka 4.0.0 - 4.0.6 Spring for Apache Kafka 3.0.0 - 3.3.16 Spring for Apache Kafka 2.9.0 - 2.9.14 Spring for Apache Kafka 2.8.12 and earlier
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring for Apache Kafka 4.1.0 -

II. Public POCs for CVE-2026-59278

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III. Intelligence Information for CVE-2026-59278

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Vendor Advisories for CVE-2026-59278 (1)

Same Patch Batch · Spring · 2026-08-27 · 25 CVEs total

CVE-2026-59270 9.4 CRITICAL Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN o
CVE-2026-47877 8.2 HIGH Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scri
CVE-2026-47879 7.7 HIGH Spring Cloud Gateway SSRF and native file access with gRPC
CVE-2026-47849 7.1 HIGH Spring Data REST allows mutation of identifier and version properties via JSON Patch
CVE-2026-59275 6.6 MEDIUM Remote JVM termination: nested-array Java deserialization bypasses allowlist, triggers Sta
CVE-2026-59274 6.5 MEDIUM Unbounded decompression in UnZipTransformer enables zip-bomb DoS
CVE-2026-47864 6.4 MEDIUM Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution
CVE-2026-47881 5.9 MEDIUM Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File
CVE-2026-47875 5.6 MEDIUM JobParameterDeserializer bypasses the trusted-type allowlist
CVE-2026-47878 5.6 MEDIUM Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist
CVE-2026-47880 5.4 MEDIUM DefaultJmsHeaderMapper copies all JMS user properties into MessageHeaders without excludin
CVE-2026-59271 5.3 MEDIUM Admin password disclosed in BrokerNotAliveException message
CVE-2026-47894 4.9 MEDIUM Spring Cloud Config Server Native Environment Repository Exposure
CVE-2026-47892 Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints
CVE-2026-47888 Spring Framework Memory Leak via SETUP Frame in RSocketMessageHandler
CVE-2026-47891 Spring Framework maxInMemorySize Bypassed in Jaxb2Decoder
CVE-2026-47890 Spring Framework Server Sent Event stream corruption while rendering fragments
CVE-2026-47889 Spring Framework sameSite Attribute Dropped in JettyCoreServerHttpResponse
CVE-2026-47893 Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketServic
CVE-2026-47887 Spring Framework Open Redirect in UrlFileNameViewController

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Spring for Apache Kafka
Same vendor: Spring

V. Comments for CVE-2026-59278

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